Marine Forecast
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind south 25 knots increasing to north 40 this evening then
diminishing to northwest 25 near noon Friday. Wind diminishing to northeast 15
Friday evening.
Showers or flurries ending early this morning. Rain
beginning this morning and changing to snow this evening then to flurries near
noon Friday. Visibility 1 mile or less in precipitation.
Freezing spray warning in effect.
Freezing spray beginning this evening and ending Friday
evening.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind south 25 knots increasing to north 40 this evening then
diminishing to northwest 25 near noon Friday. Wind diminishing to northeast 15
Friday evening.
Strong wind warning program has ended for the season.
Waves
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Waves 2 to 3 metres subsiding to 1.5 early this evening then
building to 3 to 4 near midnight. Waves subsiding to 2 to 3 Friday afternoon and
to 1.5 Friday evening.
Weather & Visibility
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Showers or flurries ending early this morning. Rain
beginning this morning and changing to snow this evening then to flurries near
noon Friday. Visibility 1 mile or less in precipitation.
Freezing Spray
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Freezing spray warning in effect.
Freezing spray beginning this evening and ending Friday
evening.
Ice Forecasts
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings (In effect)
Eastern Lake Superior
Issued 03:00 AM EST 18 December 2025'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Eastern Lake Superior
Issued 03:00 AM EST 18 December 2025Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Technical Marine Synopsis
Issued 3:00 AM EST 18 December 2025 Today Tonight and Friday At 3:00 a.m. EST today departing ridge located on a line north-south
over New England.
At 3:00 a.m. EST today low 985 mb located over northwestern
Minnesota.
By 3:00 a.m. EST Friday low 983 mb located over northeastern
Ontario.